Stenciling apparatus



Dec. 9, 1930. E. R. VAN BERGEN STENCILING APPARATUS Filed Nov. 21, 19282 Sheets-Sheet l I N VEN TOR. 6cZzz/am Z. 7622' Bayer: I

q W A TTORNEW.

E. R. VAN BERGEN STENCILING APPARATUS Filed Nov. 21, 1928 2 Sheets-Sheet2 INVENTOR.

Q YE

a ia/art? 7L? V011 Zexjerz,

ATTORNEY Dec. 9, 1930.

Patented Dec. 9, 1930 UNI E ST T P T NT O F CE swim 'R. VAN BERG N, orCLEVELAND HEIGHTS, 011m 4 srnnoxnrne ArrABA'rns ap ncauo 'iilea)Tovember 21, 1928. Serial 1101320 37.

provide means for accelerating the 'production of a plurality ofduplicate designs upon a likenumber of separate elements. Furtherobjects will appear as the description proceeds. To the accomplishmentof the foregoing and related ends, sai d invention, then, consists ofthemeans hereinafter fully described and particularly-pointed out intheclaims.

he annexed drawings'and description setforth in detail certainmechanism. embodying the invention, such disclosed" means constituting,however, but one of various mechanical. forms in which the principleofthe invention may be used. In said annexed drawings; 3 Fig. 1 is aperspective view'of one form of apparatus constructed in accordance withmyiinvention; Fig. 2 is a; bottom plan view of a fragmentvof. thestencil -sheet; Fig. 3ris a plan view ofa color sheet produced throughthe use of the apparatus disclosed in Fig. 1; Fig. 4 is a perspectiveview'of amodified form ofapparatus; Fig. 5 is aperspective view .of athird embodiment of the present invention; Fig. 6 is a. plan view of oneof the frames illustrated in Fig. 5;=.Fig. 7 is a section takensubstantially uponthe line 7 7 of. Fig. 6; and Fig. 8 is a plan view ofa modified element of the organization dis [closed in Fig. 5. A V 2 ifReferring more particularly to the Fig. 1, it will be seen that theapparatus therein dis? closed comprises a platform :10 adjacent whichthere is mounted a shaftyll so journaled that said shaft makes an; acuteangle with the horizontal, said shaft mounting a large drum 12. On oneside of said drum, there is mounted a spindle 13,- and on the op positeside of the drum there is mounted a .second spindle 14.. As isclearlyshown, the forward ends of said spindles13 and 14 are journalled inbrackets 15, while the opposite adesignis to-bestenciled; r thefollowing ends thereof are journalled in elevated v brackets 16, wherebythe axes of the spindles 13 and 14 are made parallel with the axis ofthe shaft 11. The spindle 14 is provided with al'crank arm 17, and'thespindle 13 'is provided 'with'brake means (not shown).

Extending over the periphery of the drum 12 and having its ends woundupon the spin- 'dles 13 and 14 there is a sheet 18 of suitable flexiblematerial formed with a plurality of I stencil apertures 19 which arepreferably arranged, as shown, in banks. Each of said stencil"aperturesis surrounded by a plu rality of diagonal slots 20 for the accommodationof-the corners of sheets 21 upon which .65

In operation, an'operator stands upon the platform ll witha spray gun22. A second operator stands to thele ft of thefirst adjacent thespindle18 and, as the sheet 18 is unrollecl from saidspindle' '13, this latteroperator inserts the cornersof a sheet 21 in the'slots 20 adjacent eachstehcilaperture 19. The sheets 21 are thus held; smoothly in contactwith the lower surface-0f the sheet1'8. The sheet is moved forwardly (ise., toward the spindle 14) by o-perationof'the crank 17'or by ajmot'or,the sheet being moved quite slowly and under tension ,appliedbythe-brake means of the spindle 13. so As the sheet movesforwardgoverthe drum 12, it is held by such tension smoothly against said drum andthe drum rotates upon itsshaft 11. As each bank of stencil aperturespasses the operatoron thea -platform' l0,' he thoroughly sprays theexposed portions of each sheet 21 through its respective stencilaperture, thus producing the'design 23. The lacquer usedin' thefgun 22is of aquick' drying type, and the movement of the sheet 18 is;necessarily quite slow so that, before the stenciled sheets21 reach thespindle 14, they are sufliciently dry to be removed from the sheet. I I

In Fig. 4 I have shown a section of a drum 24 upon which is mounted astencil 25 having a stencil aperture 26. To the lower surface of saidstencil 25 there is secureda sheet 27, the. corners of saidsheet beingextended through slots 28' formed in the stencil 25. is"

vention. According to this embodiment, a

booth 30 havingside Walls 31 and 32Rprovided, said side walls beingformed with parallel slots 33. c On the wall 31 there-ismounted acylinder 34. from which there extends an air hose 35fo'r operating aspray" gun 36. A board is slidably mounted in the slots 33, and on saidboard there are mounted a plurality of frames 38. As is clearlyshown inFig 6, each of said frames 38 has securedithereto a pair of hinges 39through the medium of which said frame is mounted on thesupport Ontheedge of each frame opposite that edge to which the hinges are securedthere isprovided ahandie 40, and around theborder of the frame, thereareprovideda plurality of clips 41 for securing in said frame a stencileaprpvide with any suitable form of stencil aperture-43.

. In practice, of' course, the board 37 can be any desired length,thoughthe length in dicated is preferable. W'hile the board 37 is intheposition indicated-innFig. 5, the operator is'spraying lacquer uponth esheet 44 held betweentheboard 87 frame 38a. A corresponding sheet 4Abeneath the frame 38 has been sprayed and is drying, and a blank;sheet'lras been inserted beneaththe' frame 386. WVhen thespraying ofthesheet in the frame 38a has beenmcompleted, the board 37 is slidtoward the right, thus bringing the frame 38?) into position to besprayed. \Vhile the sheet in the frame 38bis being sprayed, thefinishedsheets in the frames 38 and 38 are removed and blank-sheets areplaced therein, Then, after the-spraying of the sheet in the'frame 38bis complet ed, the board is moved-to theleft-to bring th'eframe. 38a,and later the'frame38 into position to be sprayed. a p 1 v 'InFig. 8 Ihave shown; a slightmodification of the above arrangement in; which theboard '37 is substantially wider than the board 37 to permitthe mountingof double banks of frames 38 thereon, V i

- Other modes of applyingthe principle of my invention may be employedinstead of the one explained, change being-made asfire'gards themechanism herein disclosed, provided the means stated by any of thefollowing claims'or the equivalent-of such statedmeans be employed. i vI therefore particularly point out and distinctly claim as my invention:V

I 1. In a device of the class described, an element formed with aplurality of stencil side of said element remote from the operator, apiece of material adjacent each of said apertures.-

3. In a device of the class described, an element "formed with aplurality of stencil apertures, means for moving said element past anoperator, said'element being formed to providemeans for jsecuring to.the side thereof remote from t;he;operator, a sheet in registry-witheach of said apertures. v

4.; In a device of theiclass described,-an element formed with aplurality of ban-ks of stencil apertures,- means, for moving saidelement pastan operator, and means-for'securing -to the side of saidelementremote from the operator, a piece of material to betreated;

5. In a deviceof 'the class described, a

drum,- a pair of spindlesmountedon oppo site sides of saiddrum, and a:flexiblesheet formed with aplurality oft-stencil apertures and havinits: ends wound on said'spindles',

respectively,fsaid sheetb'eing adaptedto over-- lie the surface of saiddrum. V 6. I'n a device' of theqclass 'described, a drum, a pair ofspind lesmounted on-opposite sides of'said druml in paraxial'relationthereto, and: a flexible sheetformed with: a plurality ofstencil'oapertures: and having its ends 'fwound onwsaid spindles,respectively, said sheet being adapted 'to overlie the-surface-ofsaiiddrum Q 7; In-1a-mdevice' of 'theuolass describeda drum; a pair of'spindlesqmounted :onopposite sides of said drum, and-a flexible'sheetformed witha plurality of stencil apertures and having. its ends woundon said spindles, respectively, said sheet being adapted to he tensionedon the surface of rsaid'zdrum by saidSPindl'es. o m i; 1 8; In'a'deviceof. the class described, a; platfornr, a drum mountedupon-aniaxisxmakingan acute angle with: the horizontal, a pair of spindles mounted onopposite'iside'sef said drum in paraxialrelation thereto, and aIflexible stencil sheet overlying-said;drum' and having its ends woundgo-nr said respective splndles. p

v 9. Ina device-of thejclass-descfibed, platform, adrum imounted' uponan axisfmaking an acute angle with the horizontal, a pair of spindlesmounted on opposite sides of'sai'd drum in par a 'xial relation'thereto, and afleX- ible stencil sheet overlying said-=drum"-and havingits ends wound on said "respective spindle'sysaid sheet being formedwith a plurality of slots: adj acenteach of its steneil apertures; L

10. In a device of the class described, elongated means mounting aplurality of stencils, and means for moving said first-men-' tionedmeans past an operator.

Signed by me this 19th day of November,

EDWARD R. VAN BERGEN.

